小学校のときから、酸性・アルカリ性という性質をリトマス紙で調べたりしてきていますね。の英語

Since primary school we've been checking for the qualities known as acidity and alkalinity with litmus paper.

Alkalis neutralize acids.

the condition of being neither acid nor alkaline

the chemical property of acidity

I hated chemistry during high school.

having characteristics of both an acid and a base and capable of reacting as either

combine acid with alkali

I liked biology and chemistry when I was a student.

I loved science experiments when I was a elementary school student.

of a substance, especially a strong acid

Later, in high school, I would take chemistry the way I took vitamin pills.

"What were you like in high school?" "I was quiet but really good at chemistry."

litmus paper turns red on contact with an acid

I have been learning calligraphy since I was a 4th grade elementary student.

an unstable acid that mainly exists in salt form, called thiocyanic acid

an acid known only in the form of its esters

the process of becoming acid or being converted into an acid

a glassy solid acid ([HPO3]n) often used as a dehydrating agent

Acid soil is neutralised by ash.

I hated tests when I was a student.

In high school, I spent a lot of time skiing and drawing manga.

Did you throw away the textbooks that I used as a high school or junior high student?

I used to keep a diary in English when I was a student.

of or containing or derived from formic acid

When I was at high school the subjects I liked were geography and history.

something that tastes sour

I reviewed a 1-year junior high test book.

The substance converts to an acid

I have liked science ever since I was an elementary school student.

acid [alkaline] dye(s)